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Water temperature in Boulder City (NV) in May

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Is it warm enough to swim in Boulder City in May? Average water temperature in Boulder City in May is 74.1°F and therefore suitable for comfortable swimming. The warmest water in Boulder City in May is 87.8°F, and the coldest is 62.6°F. To find out the water temperature today and in the coming days, go to Current water temperature in Boulder City

Changes water temperature in Boulder City in May 2025, 2024

To get an accurate forecast for the water temperature in Boulder City for any chosen month, compare two years within a 10 year range using the chart below.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024
May 164.4°F66.2°F
May 264.4°F66.2°F
May 366.2°F66.2°F
May 466.2°F68°F
May 566.2°F64.4°F
May 666.2°F62.6°F
May 766.2°F64.4°F
May 868°F66.2°F
May 968°F62.6°F
May 1068°F 
May 1168°F64.4°F
May 1266.2°F66.2°F
May 1364.4°F68°F
May 1464.4°F68°F
May 1566.2°F68°F
Day 2025 2024
May 1668°F69.8°F
May 1769.8°F69.8°F
May 1866.2°F68°F
May 1968°F68°F
May 2068°F68°F
May 2169.8°F68°F
May 2269.8°F68°F
May 2369.8°F69.8°F
May 2468°F69.8°F
May 2568°F68°F
May 2671.6°F69.8°F
May 2769.8°F71.6°F
May 2871.6°F71.6°F
May 2971.6°F71.6°F
May 3071.6°F71.6°F
May 3173.4°F71.6°F

Boulder City water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in May?

Want to know where the water temperature in May is good for swimming? Select the continent of interest, the day of the month and the required water temperature

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Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Boulder City is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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